Malicious PDF — malware analysis report

Static analysis result for SHA-256 901141418e0b456a…

MALICIOUS

PDF

47.2 KB Created: 2020-10-03 00:25:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: dfbcd969f95b342acdfc8c9dbbe26e1f SHA-1: 0525218f34d9e4c5cf0012bfbbe597a0d0fee78b SHA-256: 901141418e0b456ae82f9c1e61c0dbe505e8503bce14fec6a4d9b2569646689d
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://cctraff.ru/strik?keyword=dcss+0054+pdf In PDF document text
    • http://files.catchacomamarina.com/uploads/1/3/0/7/130740173/wumirigukokifa.pdfIn PDF document text
    • http://vatoma.graceandtruthministry.com/uploads/1/3/1/6/131606027/leravawilebotez_mawox_xaderujetov.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0482/0428/4061/files/dowumirukubutuxefizirovof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1442/1653/files/80022931991.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/4255/6062/files/dafeveg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3272/4124/files/46415019813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3448/4648/files/31087380558.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/1925/8021/files/california_accessibility_reference_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/6739/5236/files/honeywell_quietcare_humidifier_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efefe5bb-480f-4e1b-a263-2de5190890f4/mujorafuxajuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b3209a7-137f-42e4-8c18-cd8059497ad8/ranod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ac96974-ff09-4137-9ce8-7a19489679f6/19430078891.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d5721af-0c9c-40ba-b00c-e3bea245cc81/xigujajejasomezilasif.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006df4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DF4 4488 bytes
SHA-256: 5a111fc875df8718e86f4e3063ab326903f213f1faadf8dbd003137230cf355f
font_01_sfnt_off00007d44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D44 10772 bytes
SHA-256: b6698f53ce2a7ebae64cad19b5d7e03df2506314589b23c9e2f009a575f0f5a8
font_02_sfnt_off0000a204.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA204 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

Open this report in the interactive analyzer, or submit your own file for analysis.